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Related Concept Videos

Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Appendicitis01:19

Appendicitis

Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
Diverticular Disease of the Colon01:27

Diverticular Disease of the Colon

Diverticular disease involves the formation of diverticula—small sac-like outpouchings of the colonic wall—and their complications. It most commonly affects the sigmoid colon due to higher intraluminal pressure and structural vulnerability. It results from structural weakness and increased pressure in the colon, producing pseudodiverticula that may remain silent or progress to inflammation and serious complications.Structure of DiverticulaIn diverticulosis, these outpouchings are...
Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four quadrants...
Inflammatory Bowel Disease I: Introduction01:26

Inflammatory Bowel Disease I: Introduction

Inflammatory bowel disease is a group of chronic disorders marked by recurrent inflammation of the gastrointestinal tract due to an abnormal immune response against gut microflora. This leads to tissue damage. The two main forms are Crohn’s disease and ulcerative colitis.Crohn’s DiseaseCrohn’s disease is a relapsing inflammatory disorder that can affect any part of the GI tract, from the mouth to the anus. It involves all layers of the bowel wall (transmural) and shows “skip lesions” in which...

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Related Experiment Video

Updated: May 16, 2026

Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer
12:45

Robot-assisted Total Mesorectal Excision and Lateral Pelvic Lymph Node Dissection for Locally Advanced Middle-low Rectal Cancer

Published on: February 12, 2022

Rectal cancer.

Al B Benson1, Tanios Bekaii-Saab, Emily Chan

  • 1Robert H. Lurie Comprehensive Cancer Center of Northwestern University, USA.

Journal of the National Comprehensive Cancer Network : JNCCN
|December 11, 2012
PubMed
Summary
This summary is machine-generated.

These NCCN guidelines offer recommendations for rectal cancer management, from initial diagnosis to survivorship. A multidisciplinary approach involving various specialists is crucial for optimal patient care.

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Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
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Published on: August 24, 2019

Area of Science:

  • Oncology
  • Gastroenterology
  • Surgical Oncology
  • Radiation Oncology
  • Radiology

Background:

  • Rectal cancer management requires a comprehensive strategy.
  • Current guidelines address the full patient journey from presentation to survivorship.
  • Focus is placed on localized disease management.

Purpose of the Study:

  • To provide evidence-based recommendations for rectal cancer care.
  • To outline a structured approach for diagnosis, treatment, and surveillance.
  • To emphasize the importance of a multidisciplinary team in rectal cancer management.

Main Methods:

  • Development of clinical practice guidelines by the NCCN Rectal Cancer Panel.
  • Inclusion of recommendations covering diagnosis, staging, neoadjuvant and adjuvant therapy, surgery, surveillance, and survivorship.
  • Emphasis on integrating expertise from gastroenterology, medical oncology, surgical oncology, radiation oncology, and radiology.

Main Results:

  • Comprehensive recommendations are provided for the management of localized rectal cancer.
  • The guidelines detail the pathway from initial patient presentation to long-term survivorship.
  • A multidisciplinary approach is strongly advocated for effective treatment.

Conclusions:

  • The NCCN guidelines offer a standardized framework for rectal cancer management.
  • Effective rectal cancer treatment necessitates a collaborative effort among multiple medical disciplines.
  • Adherence to these guidelines can improve patient outcomes and survivorship.